11951995 has 8 divisors (see below), whose sum is σ = 15646320. Its totient is φ = 8692320.

The previous prime is 11951993. The next prime is 11952001. The reversal of 11951995 is 59915911.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11951995 - 2¹ = 11951993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11951993) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108600 + ... + 108709.

It is an arithmetic number, because the mean of its divisors is an integer number (1955790).

Almost surely, 2^11951995 is an apocalyptic number.

11951995 is a deficient number, since it is larger than the sum of its proper divisors (3694325).

11951995 is a wasteful number, since it uses less digits than its factorization.

11951995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217325.

The product of its digits is 18225, while the sum is 40.

The square root of 11951995 is about 3457.1657466775. The cubic root of 11951995 is about 228.6371515802.

The spelling of 11951995 in words is "eleven million, nine hundred fifty-one thousand, nine hundred ninety-five".